Detailed facade of a brownstone in Boerum Hill.

Nondescript elevator doors open to reveal a stunning, surreal world.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

This eclectic sculpture garden in Brooklyn, home to a bizarre collection of art, was once a run-down junkyard.

An exhibition space dedicated to American outsider art created between the 18th and 21st centuries.

An annual extravaganza of Broadway theater memorabilia.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

A collection of fanzines, recordings, and documents detailing the rise and influence of the feminist punk movement.

A bit of retro transportation flair preserved in the world's largest department store.

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.

The first and only carousel with a lineup entirely of insects.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

One of the last Jazz Age "Wonder Theaters" in New York City.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

A very classy 1920s-era bar right in Grand Central Station.

The oldest surviving synagogue in New York City is now a soaring art space.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Ride the subways of yesteryear.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

A terrific purveyor of natural history objects and curios.